Honestly I'm still a little unsure how this 'Yamato' thing would work, but the Shipyard requires the 'Yamato Skill' to be at max level before one can build Yamato/s so might as well be ready and upgrade it to max level as soon as possible. XD
At the moment of writing, my Yamato Skill level is now at level 15 and will be at level 16 this evening. I did notice in the Shipyard tab though that Yamato's require blueprints, I just hope that the blueprints would be sold at an affordable price and hopefully buying one would be worth it.
Anyways, I'm still pretty much active on explorations doing around 4-6 explorations daily. And so far I have already accumulated 1516 StarDusts. My luck however in finding new planets seems to have dried out as I haven't found one in almost two weeks now. T_T